树莓派开机默认配置文件：/boot/config.txt

1 # For more options and information see 2 # http://www.raspberrypi.org/documentation/configuration/config-txt.md 3 # Some settings may impact device functionality. See link above for details 4  5 # uncomment if you get no picture on HDMI for a default "safe" mode 6 #hdmi_safe=1 7  8 # uncomment this if your display has a black border of unused pixels visible 9 # and your display can output without overscan10 disable_overscan=111 12 # uncomment the following to adjust overscan. Use positive numbers if console13 # goes off screen, and negative if there is too much border14 #overscan_left=1615 #overscan_right=1616 #overscan_top=1617 #overscan_bottom=1618 19 # uncomment to force a console size. By default it will be display's size minus20 # overscan.21 #framebuffer_width=128022 #framebuffer_height=72023 24 # uncomment if hdmi display is not detected and composite is being output25 #hdmi_force_hotplug=126 27 # uncomment to force a specific HDMI mode (this will force VGA)28 #hdmi_group=129 #hdmi_mode=130 31 # uncomment to force a HDMI mode rather than DVI. This can make audio work in32 # DMT (computer monitor) modes33 #hdmi_drive=234 35 # uncomment to increase signal to HDMI, if you have interference, blanking, or36 # no display37 #config_hdmi_boost=438 39 # uncomment for composite PAL40 #sdtv_mode=241 42 #uncomment to overclock the arm. 700 MHz is the default.43 #arm_freq=80044 45 # Uncomment some or all of these to enable the optional hardware interfaces46 #dtparam=i2c_arm=on47 #dtparam=i2s=on48 #dtparam=spi=on49 50 # Uncomment this to enable the lirc-rpi module51 #dtoverlay=lirc-rpi52 53 # Additional overlays and parameters are documented /boot/overlays/README54 55 # Enable audio (loads snd_bcm2835)56 dtparam=audio=on57 58 # NOOBS Auto-generated Settings:59 hdmi_force_hotplug=1